Both Old Firm clubs have lost ground in the Scottish Premiership title race.
Rangers are four points behind leaders Hearts after drawing 2?2 at bottom side Livingston -despite facing ten men late on.
Celtic also slipped up, losing 2?1 at home to Hibs after they conceded a late goal and a red card for Auston Trusty.
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The champions are six points off the top, but do have a game in hand.
